Politicians get countries named after them. Monarchs get entire historical eras. But mathematicians? Leonhard Euler is sitting there with his cool shades because he has over 70 mathematical concepts bearing his name. Countries come and go, but E=mc² is forever. The man has theorems, numbers, formulas, and even letters (that mysterious e in calculus) immortalizing him. Talk about mathematical flexing! While kings and queens ruled lands, Euler ruled the very language of the universe. That's not just fame—that's intellectual immortality.